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Are there any known issues with the mod09a1?
For complete information about the MOD09A1 known issues please refer to the MODIS Land Quality Assessment website. Terra MODIS surface reflectance band 1-4-3 data from the MOD09A1 product over the western United States, Jul 28 – Aug 4, 2018. The Application for Extracting and Exploring Analysis Ready Samples (AρρEEARS) offers users a simpl…
How does mod09a1 relate to Level 2 and Level 3?
Low-level data are corrected for atmospheric gases and aerosols, yielding a level-2 basis for several higher-order gridded level-2 (L2G) and level-3 products. MOD09A1 provides Bands 1-7 at 500-meter resolution in an 8-day gridded level-3 product in the Sinusoidal projection.
What kind of spectroradiometer is Terra MODIS version 6?
The Moderate Resolution Imaging Spectroradiometer (MODIS) Terra MOD09A1 Version 6 product provides an estimate of the surface spectral reflectance of Terra MODIS Bands 1 through 7 corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering.
When does striping start on LP DAAC mod09a1?
Striping due to a dead detector is noticeable for bands 5, 6, and 7 in scenes acquired February 24 through October 31, 2000. Corrections were implemented to reduce the striping in data acquired after November 1, 2000.
Which is the best version of the mod09q1?
The MOD09Q1 Version 6 product provides an estimate of the surface spectral reflectance of Terra Moderate Resolution Imaging Spectroradiometer (MODIS) Bands 1 and 2, corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Provided along with the 250 meter (m) surface reflectance bands are two quality layers.
Why is mod09 incorrectly flagged as high aerosol?
The Collection 6 MODIS Land Surface Reflectance product (MOD09) may incorrectly flag retrievals as ‘High Aerosol’ over brighter surfaces and at higher view angles. This will impact the downstream MODIS BRDF/Albedo (MCD43) and Vegetation Index (MOD13 and MYD13) data products which use the aerosol quantity flag to screen out high aerosol values.